HP RP7 Maintenance & Service Guide HP RP7 Retail System Model 7800 - Page 137

Interpreting POST Diagnostic Front Panel LEDs and Audible Codes

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Table D-1 Numeric Codes and Text Messages (continued) Control panel message Description Recommended action Network Server Mode Active and No Keyboard Attached Keyboard failure while Network Server Mode enabled. 1. Reconnect keyboard with computer turned off. 2. Check connector for bent or missing pins. 3. Ensure that none of the keys are depressed. 4. Replace keyboard. Parity Check 2 Parity RAM failure. Third-party graphics card may be causing a problem. Run Computer Setup and Diagnostic utilities. Remove third-party graphics card to see if the problem goes away. The system is violating the thermal environment requirement. Improper processor installed or add-in card 1. Replace the processor with a 65-W installed in 50C mode. processor. 2. Remove any add-in cards. Interpreting POST Diagnostic Front Panel LEDs and Audible Codes This section covers the front panel LED codes as well as the audible codes that may occur before or during POST that do not necessarily have an error code or text message associated with them. WARNING! When the computer is plugged into an AC power source, voltage is always applied to the system board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to disconnect the power cord from the wall outlet and allow the internal system components to cool before touching. NOTE: If you see flashing LEDs on a PS/2 keyboard, look for flashing LEDs on the front panel of the computer and refer to the following table to determine the front panel LED codes. Recommended actions in the following table are listed in the order in which they should be performed. Not all diagnostic lights and audible codes are available on all models. Table D-2 Diagnostic Front Panel LEDs and Audible Codes Activity Beeps Possible Cause Recommended Action Green Power LED On. None Computer on. None Green Power LED flashes. None Computer in Suspend to RAM mode (some models only) or normal Suspend mode. None required. Press any key if a keyboard is attached or move the mouse if a mouse is attached to wake the computer. You can also wake the computer by pressing the power button or tapping the touch screen. Interpreting POST Diagnostic Front Panel LEDs and Audible Codes 127

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Table D-1
Numeric Codes and Text Messages (continued)
Control panel message
Description
Recommended action
Network Server Mode Active and No
Keyboard Attached
Keyboard failure while Network Server
Mode enabled.
1.
Reconnect keyboard with computer
turned off.
2.
Check connector for bent or missing
pins.
3.
Ensure that none of the keys are
depressed.
4.
Replace keyboard.
Parity Check 2
Parity RAM failure. Third-party graphics
card may be causing a problem.
Run Computer Setup and Diagnostic
utilities. Remove third-party graphics card to
see if the problem goes away.
The system is violating the thermal
environment requirement.
Improper processor installed or add-in card
installed in 50C mode.
1.
Replace the processor with a 65-W
processor.
2.
Remove any add-in cards.
Interpreting POST Diagnostic Front Panel LEDs and
Audible Codes
This section covers the front panel LED codes as well as the audible codes that may occur before or
during POST that do not necessarily have an error code or text message associated with them.
WARNING!
When the computer is plugged into an AC power source, voltage is always applied to
the system board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be
sure to disconnect the power cord from the wall outlet and allow the internal system components to
cool before touching.
NOTE:
If you see flashing LEDs on a PS/2 keyboard, look for flashing LEDs on the front panel of
the computer and refer to the following table to determine the front panel LED codes.
Recommended actions in the following table are listed in the order in which they should be
performed.
Not all diagnostic lights and audible codes are available on all models.
Table D-2
Diagnostic Front Panel LEDs and Audible Codes
Activity
Beeps
Possible Cause
Recommended Action
Green Power LED On.
None
Computer on.
None
Green Power LED flashes.
None
Computer in Suspend to
RAM mode (some models
only) or normal Suspend
mode.
None required. Press any key if a keyboard is
attached or move the mouse if a mouse is
attached to wake the computer. You can also
wake the computer by pressing the power button
or tapping the touch screen.
Interpreting POST Diagnostic Front Panel LEDs and Audible Codes
127